The biggest mistake that has been done in Poser 12, 13 was to remove the Simple Material room option this is a real Desaster making simple things really difficult when Setting up the basic. I had no crashes since I fixed the GPU and Poser could adapt it on the first run. Just that in some cases Firefly renders do look wrong in the window when rendered with ugly borders on the meshes. When saving the render these are gone, might have to do with the changes of the GPU. But at least no more Blue screen on Windows that sure was scary ....